Update grammars (#181143)

extensions/css/cgmanifest.json

@@ -6,7 +6,7 @@
 				"git": {
 					"name": "microsoft/vscode-css",
 					"repositoryUrl": "https://github.com/microsoft/vscode-css",
-					"commitHash": "4a6dc90f332bfa72c88192513435a64013d9aad4"
+					"commitHash": "1452547185a1793c946cf67f8c7c9001716e32c3"
 				}
 			},
 			"licenseDetail": [
@@ -46,7 +46,7 @@
 			],
 			"license": "MIT License",
 			"description": "The file syntaxes/css.tmLanguage.json was derived from https://github.com/atom/language-css which was originally converted from the TextMate bundle https://github.com/textmate/css.tmbundle.",
-			"version": "0.45.1"
+			"version": "0.0.0"
 		}
 	],
 	"version": 1

extensions/css/syntaxes/css.tmLanguage.json

@@ -4,7 +4,7 @@
 		"If you want to provide a fix or improvement, please create a pull request against the original repository.",
 		"Once accepted there, we are happy to receive an update request."
 	],
-	"version": "https://github.com/microsoft/vscode-css/commit/4a6dc90f332bfa72c88192513435a64013d9aad4",
+	"version": "https://github.com/microsoft/vscode-css/commit/1452547185a1793c946cf67f8c7c9001716e32c3",
 	"name": "CSS",
 	"scopeName": "source.css",
 	"patterns": [
@@ -1198,7 +1198,7 @@
 					]
 				},
 				{
-					"begin": "(?i)((:)(?:not|has|matches))(\\()",
+					"begin": "(?i)((:)(?:not|has|matches|where|is))(\\()",
 					"beginCaptures": {
 						"1": {
 							"name": "entity.other.attribute-name.pseudo-class.css"